Pressure-gage.



Illtatentecl July ft, Itttltj.

SPEEIFCATLKUN forming part of Letters Patent No. 794,654, dated i'uly et, 1905.

Application iilerl April 18, 1904. Serial Ne. 203,785.

Te MIZ uffi/rmt it ntf/,y (irme/irrt:

lle it hee wn that Yl, ifi winni: u tirunenn, a ei tiren et the United le'tates, and a residen t el teineri/'ille in the eennty ell Middlesex and State ei lilaeeaehusetts1 have invented certain new and useful vlinprevennnite in Pressure-tglagee, elE which the liellewing ie a speeilieatien.

lli/ly in venti en relates te i)reSSure-g'agee lurnisihed with what is Called a inaniniu1npreseure hand g and ite ehjeet is te previde means ler mechanically nievinel Said hand frein the euteide el. the nage-ease.

'.lhe invention is illustrated by the aecompanyinn' drawings1 in whiehliig'nre l is an eleif'atien .showing` a Apressureiuinr equipped with .my device and with the dial partly eut away. Fig'. 2 is a Central Seetien thririug'h the line 2 i?, llig. fl. liigs. :L 4t, it T, 8, Si, are enlarged iiletail views` el the Several parten i iiiiinilar nunihers relier te sin'iilar parte thrrgiugl'ieut the Several drawings.

Yl in a hi/dranliel gage with its index-hand i), inennted en the arher (ni nien-shaft) 5% and havine; a dial 'ihreug'h the central opening;` in the dial entende the hnshing' in leerse Contact therewith and retatahle therein and havingm en its; uriner end a Shoulder. @n the lower end etl the hushing' ie inelinited and rigiflliT held hy trietiinial eentaet the teethed ring' th reeting' when in peeitien leesely against the under eide et dial Lt. "ifhin teethed ringl ir; adapted te ennaire the werni-grear l07 whese shaft extei'idi-i th reue'h the enige-ease, engaging said :ase hay the groeve il. and 'furnished en its eu ter end with he lnurled inertien l2 fer eenifenienee in turning' it and ienrnnled at its inner end in peet M Un the ehiinfiii'ler ei the hashing' 5 which reste against the upper side e l: dial 2 is: nieui'ited the annular Spring' (i, ever which is placed the maxiniunrpressure hand i?, which helrl in place hy the threaded nut it lhe index-hand 2 is `lurnishei'l with the teeth i3, adapted te reet against the inani- :in'inn-pressure hand Y.

.iilerlnally (when ne pressure ie applied) the index-hand i2, peints te zere en the dial and the niaxirnurn-pressure hand reste anainet the eener side el teeth l?) en Said index-hand. lflfhen preesure is applied, the index-hand nieves areund the dial, earl-yi ng the maximumpressnre hand with it Mts the pressure is renieved the indexhand returns te zere, leavine` the maninlunrnreeenre hand at the higheat peint reaehed. lietere preseure is again applied this maxi[nein-pl'eeeure hand must he returned te zere, and heretelere this; has heen aeeenililinheifl by retrieving the eever et the casse7 called the i ring'f er raising' it and ineving;- the maximum-1reeeure hand with enes hand, thereby soiling, disligruring', and injuring,l the clial and its markings, as well as the maxinruiii-pressure hand and the index-hzmd and their hearing-e, le ehviate these dillieultiee, l have inventeiil the devieedescribed1 wl'iieh ie :,idai'ited te nieve the nizmiinuin-in'es- Sure hand, in either direetien by Simply turning' the worin-gear ehalt lerwari'l er haekivaiih as the ease may he. liy ine/ane el. theannnlar Sliring "3 and the nut H the frietienal I iearing et the manimam-pressure hand is se adjusted as te enable it 11e he easily earried around hy the index-hand with eearei'ilyany pereinjitihle lrietien and el. course Witheet any movement el" the wernrgear and te he returned by the wern'iqejear, as deseriheit .lt ie ierlieetly apparent that the device is applicable when it is desired te indicate the Inininluni pressure hy simply placing' the inaxiinunrljiressure hand against the teeth l?, and helew instead et' aheve it The hand [nai7 properly then, he Called the M neininfluire-presn sure hand 'li'lifhat l claim as my invention, and desire te secure hy Letters Patent, is@

l. ln a ereeeuregan'e the eexnhii'latielii; with the gage-CaSe and gage mechanism including;l the dial and index-hand; et a huehing' ret-atahly n'ieunted in the dial; a maxinnunqnes eure hand arranged en the upper end et said huehing'; a teethed ring rigidly fined te the lower end et said bushing; and a worm-near arranged within eaid ease te engage Said teethed ring and having;1 a Shaft extending through Said ease; said index-heini heinel tur-- nished with nieane Yler eini'ag'ing and meving' said maXimumpressnre hand; substantially as described.

2. In a pressure-gage the Combination; with the gage-ease and gage mechanism including the dial; of the index-hand 2 having` the tooth 13; the bushing 5 rotatably mounted in said dial; the spring 6, the maXimnm-pressniehand 7 and the nut 8 arranged on the upper end of said bushing; the toothed x'ingfrigidiy fixed IO to the lower end of said bushing; and the Worm-gear 10 mounted within said ease and having a shaft extending through said ease; substantially as described.

In testimony whereof I have afXed my si@ nature in presence of two Witnesses;

` GEORGE SPENCER Witnesses:

RALPH W. l `os'1"ER 'ADOLPH L. AGATHMARY. 

